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Montana Field Guide

Montana Field Guides

Delta Hydrobe - Probythinella emarginata


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:


 

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General Description
The validity of the species name, emarginata, is controversial (Hershler 1996). It used to be known as "lacustris"

Diagnostic Characteristics
The delta hydrobe is a very small (<5mm long) aquatic snail. Its diminutive size and flattened apex make it readily identifiable. While most aquatic snails in Montana possess lung tissue (pulmonate snails) and get their oxygen from the air, the delta hydrobe is one of a few MT snails that have gills (prosobranch snails).

Range Comments
Found wide-ranging and common in the US and Canada from Montana to Maine south to Texas

Migration
Sedentary.

Habitat
Freshwater.

References
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Citation for data on this website:
Delta Hydrobe — Probythinella emarginata.  Montana Field Guide.  .  Retrieved on , from